The vitamin B3 in the four flavors of Fuze Refresh is “known to improve circulation and reduce the cholesterol level in the blood,” according to the Fuze web site. None of those claims have been approved by the FDA.

“Fuze drinks won’t do anything for your kidneys, your lungs, or your heart; nor will they lower your cholesterol or prevent you from catching a cold,” says CSPI senior nutritionist David Schardt.